:efectuează respectând regulile:
:învățate:

Răspuns:
b. 1x3=3
23+40=63
50-48=2
0+8=8
c.23+(64+36):10×2=23+20=43
42:6=7
(56+49+42)-(18+5)=147-23=124
7+899=906
9×5+378=45+378=423